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Coherent detection of radar targets in a non-gaussian background

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2 Author(s)
Sangston, K.J. ; Naval Res. Lab., Washington, DC, USA ; Gerlach, K.R.

The problem of detecting radar targets against a background of coherent, correlated, non-Gaussian clutter is studied with a two-step procedure. In the first step, the structure of the amplitude and the multivariate probability density functions (pdfs) describing the statistical properties of the clutter is derived. The starting point for this derivation is the basic scattering problem, and the statistics are obtained from an extension of the central limit theorem (CLT). This extension leads to modeling the clutter amplitude statistics by a mixture of Rayleigh distributions. The end product of the first step is a multidimensional pdf in the form of a Gaussian mixture, which is then used in step 2. The aim of step 2 is to derive both the optimal and a suboptimal detection structure for detecting radar targets in this type of clutter. Some performance results for the new detection processor are also given

Published in:

Aerospace and Electronic Systems, IEEE Transactions on  (Volume:30 ,  Issue: 2 )

Date of Publication:

Apr 1994

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